Extend API to allow changesets to be queried by ids

[rails.git] / app / controllers / changeset_controller.rb

diff --git a/app/controllers/changeset_controller.rb b/app/controllers/changeset_controller.rb
index d34eb873938f648bbb1e59b7575f283bf3aa6011..735fa73a88c31a1820515aa9e4677011946be8b3 100644 (file)
--- a/app/controllers/changeset_controller.rb
+++ b/app/controllers/changeset_controller.rb
@@ -210,6 +210,7 @@ class ChangesetController < ApplicationController
     changesets = conditions_time(changesets, params['time'])
     changesets = conditions_open(changesets, params['open'])
     changesets = conditions_closed(changesets, params['closed'])
+    changesets = conditions_ids(changesets, params['changesets'])
 
     # create the results document
     results = OSM::API.new.get_xml_doc
@@ -413,6 +414,20 @@ private
     end
   end
 
+  ##
+  # query changesets by a list of ids
+  # (either specified as array or comma-separated string)
+  def conditions_ids(changesets, ids)
+    if ids.nil?
+      return changesets
+    elsif ids.empty?
+      raise OSM::APIBadUserInput.new("No changesets were given to search for")
+    else
+      ids = ids.split(',').collect { |n| n.to_i }
+      return changesets.where(:id => ids)
+    end
+  end
+
   ##
   # eliminate empty changesets (where the bbox has not been set)
   # this should be applied to all changeset list displays